Internal liner for a helmet



FIG. 1 is a front-perspective view of an internal liner for a helmet;

FIG. 2 is a rear-perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a right-side view thereof, the left-side view (not shown) being a mirror image. 

CLAIM The ornamental design for an internal liner for a helmet, as shown and described. 